User's Manual

Chapter 8 L2TP VPN Example
ZyWALL USG 2000 User’s Guide
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7 Click Security and select Advanced (custom settings) and click Settings.
Figure 202 Connect L2TP to ZyWALL: Security
8 Select Optional encryption allowed (connect even if no encryption) and the
Allow these protocols radio button. Select Unencrypted password (PAP) and
clear all of the other check boxes. Click OK. Click Yes if a screen pops up.
Figure 203 Connect L2TP to ZyWALL: Security > Advanced